Clutch for studs.



No. 818,530. PA/TENTED APR. 24, 1906. R. FISCHER.

CLUTCH FOR STUDS.

APPLICATION FILED AUG.26,1905.

7j l l @XMIM/1000m l., f f 5%@ c4d/tofu UNITED STATES PATENT OFFICE.

ROBERT FISCHER, OF NEW YORK, N. Y., ASSIGNOR TO C. P. GOLDSMITH & COMPANY, OF NEW YORK, N. Y., A FIRM.

CLUTCH FOR STUDS.

Specification of Letters Patent.

Patented April 24, 1906.

[o all whom. t may concern.-

Be it known that I, ROBERT F1scHER,-a citizen of the United States, and a resident of thel cityof New York, county of Kings, and State of New York, have invented certain new and useful Improvements in Clutches for Studs and Similar Articles, of which the following is a specication. i

My object is to provide a simple and eilicient device for attaching to the shank of shirtstuds for the purpose loi providing a two-part stud. My improvements may also be used on hat-pins and the like, where'it is desired to provide a detachable clutch for holding the same in place, although the 'device is particularly: `adapted for studs.

My object is to provide a clutch which will positively grip the button-shank so as to hold it firmly and so made that the parts are compact and can be contained in a small lat base, which need be no larger than the ordinary base now used.

In the drawings forming part of this application, Figure 1 is a side elevation, partly in' section, of my invention as applied to a shirtstud. Fig. 2 is a similar view showing the method of separating the stud. Fig. 3 is a similar view to Figs. 1 and 2 with the parts united. Fig. 4 is a sectional view taken on the line 4 4 of Fig. 3 looking in the direction of the arrows. Fig. 5 is a sectional view taken on the line 5 5 of Fig. 2.' Fig. 6 is a plan view of the sprin Fig. 7 is a section taken on the line 7 7 o Fig. 6 looking in the direction of the arrows, and Fig. 8 is an invertl and I will therefore describe my invention as forming part of a stud.

A stud usually comprises three parts-the ihead, which is here shown at 1, the shank 2,

and a base 3. As is well understood, the base and head through their connection, the shank, serves to hold the parts of a garment together, as well as providing ornamentation.l

My improvements relate particularly to the base and to the shank, and wherever I employ the word base I desire it understood that I mean to include any device for holding a shank against being withdrawn from the clothing, &c.

" The head of the stud may be of any desired form and ornamentation so far as my improvements are concerned, and the shank finger-piece 8 has been sprung into place.

The spring maybe stamped out of iiat material and is provided with inward projections 10 and is bent so as to cause the projections to normally lie above the bottom of the shell: The finger-piece 8, which is adapted after being inserted in the central 'opening in the spring to be held thereby, consists of a top plate 11, a gripping end 12, and an interinodiate reduced portion 13. As before stated, the spring which engages about the part 13 is adapted to retain the inger-piece in place. When the parts'are to be assembled, a retaining-cup 14 is secured to the shell, in which is contained a gripping member, which herein consists of balls 15. The cup is provided with a central and vertical cylindrical portion 16, which is of 'one diameter 17 at the bottom and of a smaller diameter at the top 18, thus providing a shoulder 19, against which the balls are adapted to press when forced upwardly. The top of the cup is provided With an aperture to allow the buttonshank to move therein. The cup and shell are secured together by turning over the edge of the latter.

The parts of the stud are joined by inserting the shank, as shown in Fig. 1, into the clutch until the end 5 enters an opening in the finger-piece, when the nger-piece is moved therewith against the action of the spring, when the balls are free to move into the larger part of the cup. The parts will then be in the position shown in Fig. 2, with the balls opposite the groove 4 of the shank. When the finger-piece is released, the upward IOO -wardly, when it will be Withdrawn from the clutch. y

While l have specifically described one e111-, bodiment of .my invention, I do not Wish :to

be limited to the exact construction inthe scope .of the following claims except Where such details are positively included therein,v as various changes may be made Without defparting from the spirit of my invention.-

Having described my invention, What l claim isl 1. An article of the class described, having' a shank provided with a groove, a clutch therefor, comprising a retaining-chamber having a shoulder, balls in said chamber which engage on said shoulder and enter the groove of the shank, thereby gripping the latter, anda iinger-piece adapted to move said balls in and out of engagement with said shank. 9

2. An article of the class described, having a shank provided with a groove, aclutch therefor, comprising a retaining-chamber, balls therein adapted to engage in the said groove to grip the said shank and a fingerpiece adapted to move said balls in and out of engagement with said shank. A,

3. An article oi the classdescribed. having taining members having. axchamberin which are provided balls, a i'ngerfpiece 8 having a the chamber, said balls lbeing kadapted 4to engagethe Shank.

5. An articleoff'- the class described come.i

prising a shank havinga groove, and a conical end, a holder therefor, cemprising a base 6, aleaf-spring 9,1ifnlthebase, alnger-piece 8, 'held by the said spring, a cup 14 secured to the base and yhaving, a chamber provided with a shoulder, bal-ls in the'said -ingerepiece whereby when the finger-piece is moved upwardly the ballswill be caused to press on the said shoulder and enter the groove rin the shank gthe said shank being adapted to be released upon the outward movement ol" the 7o finger-piece. y

Signed this 25th dayoi August, 19.05.

ROBERT FISCHER. Witnesses:

CHARLES G. 'HENsLEY,

GUsTAvE HUONOW,"

, sis top plate 1l adapted to `retain said balls in 

